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74HC138 Datasheet, PDF (1/9 Pages) NXP Semiconductors – 3-to-8 line decoder/demultiplexer; inverting | |||
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74HC138
1âofâ8 Decoder/
Demultiplexer
HighâPerformance SiliconâGate CMOS
The 74HC138 is identical in pinout to the LS138. The device inputs
are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
The HC138 decodes a threeâbit Address to oneâofâeight activeâlow
outputs. This device features three Chip Select inputs, two activeâlow
and one activeâhigh to facilitate the demultiplexing, cascading, and
chipâselecting functions. The demultiplexing function is
accomplished by using the Address inputs to select the desired device
output; one of the Chip Selects is used as a data input while the other
Chip Selects are held in their active states.
Features
⢠Output Drive Capability: 10 LSTTL Loads
⢠Outputs Directly Interface to CMOS, NMOS and TTL
⢠Operating Voltage Range: 2.0 to 6.0 V
⢠Low Input Current: 1.0 mA
⢠High Noise Immunity Characteristic of CMOS Devices
⢠In Compliance with the Requirements Defined by JEDEC
Standard No. 7A
⢠ESD Performance: HBM > 2000 V; Machine Model > 200 V
⢠Chip Complexity: 100 FETs or 29 Equivalent Gates
⢠These are PbâFree Devices
http://onsemi.com
16
1
16
1
MARKING
DIAGRAMS
16
SOICâ16
D SUFFIX
CASE 751B
HC138G
AWLYWW
1
TSSOPâ16
DT SUFFIX
CASE 948F
16
HC
138
ALYW G
G
1
HC138 = Device Code
A
= Assembly Location
L, WL = Wafer Lot
Y
= Year
W, WW = Work Week
G or G = PbâFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
1
March, 2007 â Rev. 1
Publication Order Number:
74HC138/D
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